...it was not simply a matter of musical taste; whether you preferred the Beatles or [the Rolling] Stones said much about your personality and character. People who were happy, intelligent, well-adjusted, popular, clean, decent and punctual tended to be Beatles fans. Those who were evil, cretinous, scabby, drug-ridden, filthy, criminal perverts liked the Stones.
As for your author, I personally take no side in the controversy, remaining strictly neutral.